Not only does these engines have rotating parts they are also air-breathing, flying the helicopter to the mun is therefor impossible.Please note that the all non pushing engines use origin hacks to get past the engine deathray issue, this causes them to spawn offset from where you drop them in the VAB (should be either 12 or 15m below, so dropping them quite high up in the VAB is a good idea).
Thanks to my inside man (C7) engine damage can now be turned off, all pulling props now have a mass value with some logic behind it.

The swingwingmech has very thin moving colliders so placing stuff on it is a tad bid finicky in angle snap mode, normal attach works fine.

Re: Damned Aerospace

What I meant with engine deathray issue is that LFE based things cast a 'deathray' from their origin along the thrust vector, damaging things it comes in contact with. And since the both the turboprop and the helicopterunit are intended to pull rather than push they would end up deathraying themselfs if their origins were at a logical position.